Evening, 

Looking for a little advice. Last week my 2011 2.0 Diesel had its air con compressor replaced, aux belt had snapped.  

All good, had it back 2 days and it brought up an issue I'd never had before, various codes pointing to a blocked EPF,  not sure if just a coincidence or maybe the 2 are related.  

 

Garage said its just a coincidence and Id need my DPF cleaned, said they'd book in with another place they use, cost is between £200-400.  

Codes are 

P246C DPF restriction 

p2463 dpf soot accumulation

P24a4 dpf restriction 

P244c catalytic converter temp low 

Not trying to fix myself just looking for opinion.  Garage said will need to get dpf cleaned and maybe rule out, could be a sensor.  Seems an expensive way to test its not that.

Did have a look attached picture of something that looked like it should be plugged in next to the aux belt.  

 

Also bought so foam cleaner to try, space is very limited where is the temp sensor I need to remove to spray it into ? 

 

Any help/advice would be appreciated thanks 

 

 

 

 

That plug is for the AC compressor clutch.  Does the AC work since the new compressor was fitted?

I don't think the DPF issues are linked.  DPF temp too low suggests the vaporiser isn't working correctly.  DPF will be filling up with soot if it's not getting hot enough to complete the regens.

The DPF on this car is right underneath, you won't be able to reach the temp sensors from above.

Don't just let them "clean" the DPF as a first line solution, especially not by removing it.

As I always boringly say, it is usually the victim of another fault so if that isn't sorted, the fault will be back?

To avoid my repetitive ramblings, other than: Test DPF differential pressure sensor at idle and 3000 RPM and the vaporiser plug isn't blocked or burnt out plus other sensors are giving realistic readings (temperature, air temp, etc)

Check:

https://www.youtube.com/@ORileysAutos

For multiple hints and how I think it should be looked into?

Maybe directly relevant:

Depending on mileage, operating conditions etc it MAY, just may need a clean to remove ash build up but only proper diagnosis can decide on that (distance between regens is short?)

12 hours ago, TomsFocus said:

That plug is for the AC compressor clutch.  Does the AC work since the new compressor was fitted?

I don't think the DPF issues are linked.  DPF temp too low suggests the vaporiser isn't working correctly.  DPF will be filling up with soot if it's not getting hot enough to complete the regens.

The DPF on this car is right underneath, you won't be able to reach the temp sensors from above.

Thanks for the reply, garage hasn't refilled the ac gas, said they don't do it so it's not possible just yet to test.  

So this clutch should be plugged back in?  

Wasn't 100% if it was linked, guessing just coincidence this fault showed up shortly after.  

 

Thanks for your reply, appreciate it. 

Would the vaporiser need testing before I try a foam can spray someone clean, someone recommended 🤔 

 

 

12 hours ago, Shearers said:

Don't just let them "clean" the DPF as a first line solution, especially not by removing it.

As I always boringly say, it is usually the victim of another fault so if that isn't sorted, the fault will be back?

To avoid my repetitive ramblings, other than: Test DPF differential pressure sensor at idle and 3000 RPM and the vaporiser plug isn't blocked or burnt out plus other sensors are giving realistic readings (temperature, air temp, etc)

Check:

https://www.youtube.com/@ORileysAutos

For multiple hints and how I think it should be looked into?

Maybe directly relevant:

Depending on mileage, operating conditions etc it MAY, just may need a clean to remove ash build up but only proper diagnosis can decide on that (distance between regens is short?)

Thanks that video is a big help, I may try the foam clean.  I thought maybe able to access the temp sensor from under the bonnet to try the foam clean, looking at the video guessing only access is underneath. 

 

Appreciate the reply 

At the very least, I'd check the vaporiser (clamp fuel pipe to avoid any risk of having to prime the system), try to blow through with another pipe, should be very little resistance.

Definitely test that first because if it is blocked you will NEVER get a regen going!!

You can see the device on multiple O'Rileys videos

Spray the foam in through one of the DPF pressure sensor pipes - the one at the front, obviously.
There may be other faults causing this DPF blocking however vaporiser is perhaps most likely if it has never been changed and mileage is over 80k (that is when ours blocked - that's all I can say)
Vaporiser may be able to be cleaned (he does that with blowtorch and by applying pressure to it) but also check the glow plug (resistance 0.8 to 1.3 Ω but if on the low side it may be blowing the fuse so need changing) and fuses on that and pump.

Forscan  - recommended (or other high end scanner) can access live data on pressure, temperatures and multiple other associated parameters to see what is going on.

10 hours ago, Jellydog123 said:

Thanks for the reply, garage hasn't refilled the ac gas, said they don't do it so it's not possible just yet to test.  

So this clutch should be plugged back in?  

Wasn't 100% if it was linked, guessing just coincidence this fault showed up shortly after.  

 

Thanks for your reply, appreciate it. 

Would the vaporiser need testing before I try a foam can spray someone clean, someone recommended 🤔 

 

 

Yes, that needs plugging back in.  It won't work otherwise.  Very sceptical about a garage that will fit AC parts but not test them in house.

Regen won't work without the vaporiser.  It probably needs replacing, though you can test it as shown in the post above.